The mysterious man at the centre of yesterday's damning eyewitness account of in-the-flesh branch stacking at Victorian ALP HQ is sacked Justin Madden staffer Hakki Suleyman, Crikey can reveal.

After initially refusing to name names, Independents faction chief Eric Dearricott told Crikey this morning that Suleyman was present in the room as the midday deadline for renewals neared. Suleyman is believed to have been controlling the flow of renewals. His presence was met with disbelief by Dearricott and other observers.